Dear Editor,

I am very sorry to inform you that we made a mistake in depicting the affiliated institution of our co-author Ji Hyun Jeon in the recently published article as above described. I am kindly asking to change the affiliated institution from the wrong ¹¹Kangwon National University School of Medicine, Kangwon National University Hospital, Chuncheon into ¹³CHA Gangnam Medical Center, CHA University, Seoul.

Change of affiliation of one author, Ji Hyun Jeon:

Old authors: Young Mi Han,¹ Hyun Joo Seo,² Seo Heui Choi,³ Yu Jin Jung,⁴ So Yoon Ahn,⁵ Hye Soo Yoo,⁵ Se In Sung,⁵ Jae Won Shim,⁶ Yeon Kyung Lee,⁷ Sun Young Ko,⁷ Son Moon Shin,⁷ Jong Hee Hwang,⁸ Jang Hoon Lee,⁹ Byung Min Choi,¹⁰ Eun Sun Kim,¹¹ Ji Hyun Jeon,¹¹ Sung Shin Kim,¹² Yun Sil Chang,⁵ and Won Soon Park⁵

Old affiliations: ¹¹Kangwon National University School of Medicine, Kangwon National University Hospital, Chuncheon

New authors: Young Mi Han,¹ Hyun Joo Seo,² Seo Heui Choi,³ Yu Jin Jung,⁴ So Yoon Ahn,⁵ Hye Soo Yoo,⁵ Se In Sung,⁵ Jae Won Shim,⁶ Yeon Kyung Lee,⁷ Sun Young Ko,⁷ Son Moon Shin,⁷ Jong Hee Hwang,⁸ Jang Hoon Lee,⁹ Byung Min Choi,¹⁰ Eun Sun Kim,¹¹ Sung Shin Kim,¹² Ji Hyun Jeon,¹³ Yun Sil Chang,⁵ and Won Soon Park⁵

New affiliations: ¹³CHA Gangnam Medical Center, CHA University, Seoul.

Thank you very much for your times and efforts in advance.

Sincerely yours,

Won Soon Park

Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea. Tel: +82.2-3410-3523, Fax: +82.2-3410-0043, E-mail: wonspark@skku.edu